The Pterobryaceae contain about 14 genera with less than 190 species distributed primarily in the tropics; 10 genera and ca. 36 species in the Neotropics. Almost exclusively epiphytic in the tropical Andes, this family exhibits a variety of growth forms. i.e., pendent, dendroid or frondose.

2. Leaves spirally arranged, not ranked, or weakly so; costa minutely short and forked, occasionally single, or if costa absent, then leaf apex abruptly narrow and long acuminate … Renauldia* (recorded for Peru, may be found in Bolivia)